The number of defective bulbs in a lot is example of ____________?
A. Continuous variable
B. Discrete variable
C. Function
D. None of these
Statistics Mcqs
A random variable is ____________ ?
A random variable is ____________ ?
A. Not a function
B. A continuous variable
C. A function
D. None of these
A function probability that a random variable of x has a value less than is called _____________?
A function probability that a random variable of x has a value less than is called _____________?
A. Random function
B. Distribution function
C. Continuous function
D. probability function
_________ are the numbers obtained by some random process?
_________ are the numbers obtained by some random process?
A. Two- digit number take
B. Random table
C. Pack
D. Non of these
Two digit random numbers are ________________?
Two digit random numbers are ________________?
A. 2
B. 10
C. 99
D. 100
A random variable may be _____________?
A random variable may be _____________?
A. fixed
B. continuous
C. discrete
D. discrete or continuous
If E(x) is the expected value of X then E[x – E(x)]= ___________________?
If E(x) is the expected value of X then E[x – E(x)]= ___________________?
A. E(x) – E(x)
B. E(X) – 0
C. 0
D. E(x) + E(x)
Discrete random variable is real valued function defined on a ___________ sample space?
Discrete random variable is real valued function defined on a ___________ sample space?
A. Discrete
B. Variable
C. Scale
D. Non of these
If x is 4 and the distribution is 2, 3, 4, 5, 6, the sum of squared deviations from the x will be______________?
If x is 4 and the distribution is 2, 3, 4, 5, 6, the sum of squared deviations from the x will be______________?
A. 8
B. 10
C. 6
D. 12
A contractor employs 20 male, 15 female and 5 children in his factory. Male wages are Rs. 10 per day, female Rs. 8 per day, and children Rs. 3 per day. The weighted x of wages paid per day will be_____________?
A contractor employs 20 male, 15 female and 5 children in his factory. Male wages are Rs. 10 per day, female Rs. 8 per day, and children Rs. 3 per day. The weighted x of wages paid per day will be_____________?
A. 3.86
B. 8.37
C. 9.21
D. 10.63